Date: Thu, 18 Aug 2011 17:55:48 -0700 From: Garrett Cooper <yanegomi@gmail.com> To: Andriy Gapon <avg@freebsd.org>, "Kenneth D. Merry" <ken@freebsd.org> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: panic: mtx_lock_spin: recursed on non-recursive mutex cnputs_mtx @ /usr/src/sys/kern/kern_cons.c:420 when running dump in ddb Message-ID: <CAGH67wSj8d9=oLmh5e68DoSwo5u7nTXL7LacHRcvymRbOf=rPg@mail.gmail.com>
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Hi, Long story short, I was running a UP kernel on a netbook trying to stimulate a crash and when I did dump, it would periodically fail non-recursive mutex failure with the output shown below (I caught it once, but the other times the dump failed). Thanks, -Garrett Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d33a0 fault code = supervisor read, page not present instruction pointer = 0x20:0xc084cbee stack pointer = 0x28:0xe6ca3098 frame pointer = 0x28:0xe6ca3130 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca2f80 frame pointer = 0x28:0xe6ca2fb8 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca2e68 frame pointer = 0x28:0xe6ca2ea0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca2d50 frame pointer = 0x28:0xe6ca2d88 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca2c38 frame pointer = 0x28:0xe6ca2c70 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca2b20 frame pointer = 0x28:0xe6ca2b58 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca2a08 frame pointer = 0x28:0xe6ca2a40 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca28f0 frame pointer = 0x28:0xe6ca2928 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca27d8 frame pointer = 0x28:0xe6ca2810 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca26c0 frame pointer = 0x28:0xe6ca26f8 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address = 0x967d31e4 fault code = supervisor read, page not present instruction pointer = 0x20:0xc085f46f stack pointer = 0x28:0xe6ca25a8 frame pointer = 0x28:0xe6ca25e0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = kernel trap 12 with interrupts disabled panic: mtx_lock_spin: recursed on non-recursive mutex cnputs_mtx @ /usr/src/sys/kern/kern_cons.c:420
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